SDF to SLC flight delays & on-time performance
Nonstop flights from Louisville Muhammad Ali International Airport to Salt Lake City International Airport · 1,409 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SDF or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Louisville (SDF) to Salt Lake City (SLC) arrived on time 0% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 0% arrived an hour or more late.
- Delta Air Lines is the only airline reporting nonstop flights on this route.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (86%).
Which airline is most on time from SDF to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Delta Air Lines | 0% | 0.0% | 26 min | 0.0% | 2 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
Not enough departures across different hours to compare.
Best day of the week
On-time arrival rate by day of departure.
- Thursday0%0.0% cancelled
- Sunday0%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)86%
- Air traffic control & airport congestion14%
- Late-arriving aircraft0%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SDF to SLC: common questions
- How often are SDF to SLC flights on time?
- 0% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Louisville to Salt Lake City cancelled?
- 0.0% of scheduled flights were cancelled (0 of 2).
- How long are typical delays?
- Across all flights the average arrival delay was 26 min (early arrivals count as zero). Flights that were late arrived 26 min behind schedule on average, and 0.0% of flights were an hour or more late.
- How long is taxi time at SDF?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to SDF — 100% on time
More flights from Louisville
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SDF → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.